** FILE ** Former Arizona Cardinals football player Pat Tillman, is shown in a June 2003 photo, released by Photography Plus. The New York Giants will face the Arizona Cardinals, Tillman's former team, when the NFL opens the 2005 season on Sept. 11, the first time pro football games have been played on that date since before the attacks. Tillman gave up a lucrative contract after the Sept. 11, 2001 terror attacks to join the Army with his brother, only to be killed in Afghanistan last year. (AP Photo/Photography Plus via Williamson Stealth Media Solutions) Ran on: 09-25-2005
Pat Tillman, who gave up a career in the NFL that would have made him a millionaire so he could instead fight terrorism as an Army Ranger, died from friendly fire in Afghanistan. Ran on: 09-25-2005
Pat Tillman, who gave up a career in the NFL that would have made him a millionaire so he could instead fight terrorism as an Army Ranger, died from friendly fire in Afghanistan.

The Department of Defense inspector general has asked the Army to open a criminal investigation into the death of Army Cpl. Pat Tillman, the football star turned soldier who was killed in Afghanistan by his fellow Rangers nearly two years ago.

The request, which came out of the inspector general's review of four previous investigations of the April 22, 2004, shooting, will likely lead investigators from the Army Criminal Investigation Command to return to Afghanistan and conduct a monthslong investigation into whether Tillman's death may have been a homicide, the result of criminal negligence or an accident, said an Army official who asked to remain anonymous.

Rep. Mike Honda, D-San Jose, told The Chronicle on Saturday that while he was gratified by the inspector general's recommendation, he was concerned about the Army "investigating itself" and said he may recommend a congressional inquiry into Tillman's death and a possible cover-up by the military.

The criminal probe is the latest twist in a case that has led Tillman's family members to charge the military with covering up the circumstances surrounding the death of the San Jose native and Leland High School graduate, who gave up a high-paying National Football League career with the Arizona Cardinals after the Sept. 11, 2001, terrorist attacks to join the Army along with his brother Kevin.

"The first investigative officer indicated two years ago there should have been a criminal investigation, and the Army took his investigative report and sent it up to the regiment level in what he thought was an attempt to find the truth, but which appears to have been an attempt to cover up the truth," Tillman's mother, Mary, said Saturday.

"The whole family has been trying to say there is something wrong here -- it's been there from the beginning, and we've had to go through this horrible process for almost two years. The Army used him. They knew right away he was killed by fratricide and used him for their own purposes to promote the war, to get sympathy for the war, for five weeks."

Military officials originally said Tillman was killed when his unit came under enemy fire in Afghanistan, a statement repeated a week after his death in a Special Operations Command press release announcing his posthumous Silver Star medal.

"Through the firing, Tillman's voice was heard issuing commands to take the fight to the enemy forces emplaced on the dominating high ground," the release said. "Leading his Rangers without regard for his own safety, Tillman was shot and killed while focusing his efforts on the elimination of the enemy forces and the protection of his team members."

It wasn't until the end of May, weeks after a May 5 memorial service in San Jose, that the U.S. Central Command announced Tillman died "as a probable result of friendly fire while his unit was engaged in combat with enemy forces."

In fact, according to documents obtained by The Chronicle, the first investigator had delivered a report on May 4, 2004, concluding that soldiers involved in the incident had committed "gross negligence" and should be appropriately disciplined.

Other testimony said Tillman's platoon was split after a humvee became disabled -- a decision one platoon leader protested was dangerous -- and the two sides lost contact in a canyon, with Tillman's group in the lead.

Some time later, according to testimony, the second group spotted Tillman's group and opened fire wildly, despite the efforts of their lead vehicle driver -- who recognized the group as friendly -- and Tillman's own efforts to identify himself by shouting and setting off a smoke grenade.

Some of those who testified in the first investigation later changed their stories, according to documents obtained by The Chronicle, and some evidence was mishandled, including Tillman's armor and uniform, which were burned.

The initial investigating officer became a key witness in a subsequent inquiry, in which he testified that he thought some Rangers "could be charged for criminal intent." For reasons that are not clear, the officer's investigation was taken over by a higher-ranking commander. That officer's findings, delivered the next month, called for less severe discipline than the initial investigator thought was warranted.

Tillman's death was the subject of four reviews -- two by the Army's 75th Ranger Regiment, one by U.S. Army Special Forces Command and one by the Army's Safety Center, which focused on preventing a similar case.

Seven soldiers received administrative reprimands, but no high-ranking officers have been disciplined. Tillman's parents, who obtained heavily redacted versions of the investigations from the Army, complained publicly that the documents showed that Pentagon commanders -- including Gen. John Abizaid, head of the U.S. Central Command -- had known soon after Tillman's death that friendly fire had killed him.

The Army apologized in June 2005. But Tillman's family, with the support of Sen. John McCain, R-Ariz., and of Rep. Honda, demanded a further review of the case, and the inspector general agreed in August to conduct the review that led to Friday's request for a criminal investigation.

"The U.S. Army remains committed to thorough death investigations of all soldiers killed on the battlefield overseas," Army spokesman Paul Boyce said Saturday. "They are looked at each one on its merits and in its details. And we continue to keep the families apprised of these. It is our commitment and our obligation to them to do so."

Honda, expressing his concerns over the Army policing itself, said, "Given today's situation and the kind of things that don't become apparent, I'm highly suspicious, and I want to make sure every base is covered," he said. "In this day and age, I have very little trust in the institutions we have investigating themselves, and I want the public to have the utmost confidence in its outcome."

To that end, Honda said he plans to discuss with congressional colleagues the possibility of Congress investigating Tillman's death, as well as whether the circumstances of the death were covered up by people high in the military chain of command.

"We ought to move forward for an independent investigation with full powers of subpoena," Honda said. "My bottom line is to get to the truth and make sure that Mary Tillman and her family have the investigation and the outcome they are seeking, and justice, No. 1, is served and the truth comes out."

The results of the Army's criminal investigation will be available to Tillman's family and Congress and to the media through the Freedom of Information Act, the Army official said. A Tillman family member said the inspector general's investigation will continue separately and is expected to last several more months.